Understandable
We’re not sure how serious this relationship was. If your girlfriend is going to break up with you for something you did or didn’t do in a dream, then maybe your relationship wasn’t that good to begin with. That’s what happened to this poor guy, who woke up not to his girlfriend’s smiling face but a snarling one.
After asking what happened, she told him that she was mugged in her dream, and her boyfriend did nothing to prevent or stop the mugging. Then she left. Just like that, she packed up her stuff and left his apartment. Sorry for your loss, bro, but you might have dodged a bullet there.